Silica
Mineral: Silica/Quartz
Quartz (silica,SiO2) is the core mineral within the Sibelco group and can be found in a broad number of applications, such as glass, ceramics and polymers.
Quartz can be characterised by:
- Relatively high Mohs hardness of 7
- Low electrical conductivity
- Easy to wet
- High inertness in various media
- Shape (depending on the source, quartz particles can have an angular or more rounded shape)
Note when using quartz: depending on the particle size distribution of the product, it can be labelled (STOT RE 2 or STOT RE 1). For more detailed information, visit www.safesilica.eu.
Basic properties
| Property | Value | Unit |
| Moisture | [%] | |
| pH | 7 | [-] |
| Hardness (Mohs) | 7 | [-] |
| Refractive index | 1.55 | [-] |
| Colour (D65/ 10°) L* | 93 – 96 | [-] |
| L.O.I. | < 0.3 | [%] |
| Density | 2.65 | [kg/ dm3] |
Products:
| Name | Grade | D50 |
| [µm] | ||
| Silica | M4 | 50 |
| M6 | 33 | |
| M8 | 27 | |
| M10 | 23 | |
| M300 | 19 | |
| M400 | 12 | |
| M500 | 5 | |
| M600 | 5 | |
| M800 | 1.8 |
Production Location: Dessel (BE)
Functionalities: Silica has good electrical insulating properties and heat conductive properties. It has a reinforcing effect and also allows the skilled formulator to make a low viscosity compound that easily flows into the smallest cavities.
Performance
